NXP i.MX8M Mini System kernel panic in Yocto 2.5.

[charleshuang]

Hi NXP 

Our customer use the i.MX8M Mini solution. (Yocto 2.5)

He try modify and add rs-485 application.

** drivers/tty/serial/imx.c **     

-#define RXTL_UART 16 /* For uart */
+#define RXTL_UART 4 /* For uart */

He run the application, then debug message show "kernel panic".

Please check the modify patch. (0001_tsl_kernel_modify.patch) and System Crash_info.txt 

Our customer try modify the RXTL_UART  4 (in driver/tty/serial/imx.c)

Do you have any advice about fixed the kernel panic issue?

[AldoG]

Hello,

By the error it is a failed read access, more information about this can be found in the D3.5 ARMv8 Architecture Reference Manual.

It may be useful to look into the following commit:

https://source.codeaurora.org/external/imx/linux-imx/commit/?h=lf-5.10.y&id=677fe555cbfb188af58cce10...

Also, would it be possible to try with a more recent kernel release?

Best regards,
Aldo.